Are fat Ph.D.'s subject to discrimination?

A new study that suggests it is in fact happening comes on the heels of a professor's controversial tweet last month that denigrated obese Ph.D. students. Geoffrey Miller, an evolutionary psychology professor, unleashed a firestorm of criticism when he tweeted this:

"Dear obese PhD applicants: if you didn't have the willpower to stop eating carbs, you won't have the willpower to do a dissertation. #truth."

After the tweet caused an uproar, Miller, who is a visiting professor this summer at New York University, claimed that the tweet was part of a research project, but the institutional review board at the University of New Mexico where he is tenured didn't buy it.